Carrier KR12KY218 Motor Pulley 321042-401 Does this module control the

Does this module control the system and boiler pumps

Common signs include a loud grinding noise during the pre-purge cycle

Reliable Switching: Single-pole single-throw (SPST) mechanism ensures positive contact make-and-break for load-carrying circuits

High-Flow Capacity: The 3/4" NPT connection supports high-volume gas flow with a maximum pressure rating of 1/2 PSI for large-scale equipment

thereby mitigating the risk of flue gas recirculation

Carrier KR12KY218 Motor Pulley 321042-401 Does this module control theThe Carrier KR12KY218 Motor Pulley is a precision engineered OEM replacement part designed for high demand industrial and commercial HVAC systems. Featuring a 1 3 8 inch bore diameter, this variable speed motor pulley is constructed from heavy duty steel to ensure long term structural integrity under constant mechanical stress. As a Factory Authorized Part, the KR12KY218 is specifically balanced to minimize vibration in Carrier packaged units and